柳州市数字山地图的设计与编制

Design and Compilation of Digital Mountain Map in Liuzhou

摘要: 为研究中小区域山地分布情况，利用数字山地与遥感结合的方法，以坡度、海拔和起伏度为指标，通过分级计算和修正，建立柳州市的山地量化界定指标，并在ARCGIS软件支持下绘制柳州市数字山地图。该图对柳州山地空间范围界定与分析做了较为系统的制图表达和统计，得到柳州市山地面积大约为1403.44 km2，占全市陆地面积的75%。从结果图中可看出，柳州市东南沿海地区以中小起伏山地和丘陵为主；南部地区地形平坦，海拔高度大部分不超过240 m，为人口城镇河流的密集地区；而北部，尤其是西北部地区，由于地处云贵高原边缘，山地密集，海拔较高，起伏度和坡度都比较大。

Abstract: To study the distribution of mountains in small and medium-sized areas, slope, elevation and undulation are used as index to gradation calculation and modification of quantitative indicators for mountainization by the method of combining digital mountain and remote sensing in Liuzhou City, and with the support of ARCGIS software, it will map Liuzhou City Digital Mountain. The area of the mountainous area in Liuzhou City is approximately 1403.44 km2, accounting for 75% of the city’s land area. From the result map, we can see that the southeastern coastal area of Liuzhou City is dominated by small and medium-sized rolling hills and hills; in the southern part, the terrain is flat, and most of the elevations do not exceed 240 m. It is a densely populated area of urban population and the north, especially in the northwest. In the area, due to the fact that it is located on the edge of the Yunnan-Guizhou Plateau, it is dense with mountains and high elevations. The degree of undulation and slope is relatively large.